Sandpaper holder



Feb 7, 1933. c. ADORNETTO 1,896,738

SANDPAPER HOLDER Filed June 4, 1952 11v VENTO/e ATTORNEY Patented Feb. 1, 1933 I i 1,896,738

UNITED STATES PATENT OFF-ICE- My c utMELo anonnnr'ro, .01 mew YORK, N. Y.

snlvnrnrnii iiomm'a Application filed June 4, 1932., Serial No. 615,296.

This invention relates to sandpaper or ed disc portion 6 having a lower boss 7, emery cloth holders and has for one ofv its through which boss and disc portion there objects the provision of a device of this charis provided a central bore 8 adapted to reacter provided with a yieldable resilient core ceive the reduced end 9 of a shaft 10. The

over which a sheet of sandpaper or emery said support is secured to the reduced shaft 55 cloth is suitably held. end 9 by means of'a set screw 11.

Another object of the invention is to pro- The. said support 5 is further provided vide means for securely holding theabrasive with an upper boss having a central bore sheet in place as' well as means for prelim- 16 concentric with the bore 8 but somewhat inarily holding the said sheet in place before larger in diameter that the diameter of the 60 the final holding means is applied thereto. said'bore 8. A pair of peripheral grooves Another object is to produce a device of the l? and 18 located at or near the bottom of character described in which themaximum the ,bossl5together with a pair of substansimplicity of construction and operation is tial halfrings 19 form means for temporari- 15 secured. a ly securing asheet of sand paper 20 or the Other objects and advantages will appear like about the periphery of the boss 15. A as the nature of the improvements is better central core 21 made offelt, sponge, rubber understood, the invention consisting substanor the like 'andhaving a reduced portion 22 tially in the novel arrangement and co-relawhich fits into the bore 16 forms a resilient 20 tion of parts herein fully described, and ilbuffer and prevents the marring of any surlustrated in the accompanying drawing, face which is'being abraded. It will of course wherein similar reference characters are be understood that the entire device is rotated used to describe corresponding parts through- With the shaft 10 extending'from a suitable out the several views, and then finally pointed machine not shown.

25 out and specifically defined and indicated in To more permanently secure the abrasive the appended claims. sheet 20 about the supportf), there is pro- The disclosure made the basis of exemplifyvided a nut 25 which has-at the top thereof ing the present inventive concept suggests a an inwardly extending flange '26 having a practical embodiment thereof, but the incentral opening'or'bore 27. \Vhen the said vention is not to be restricted to the exact denut 25 is screwed down in place the flange 26 tails of this disclosure, and the latter, thereclamps theoutwardly extending flange 28 fore, is to be understood from an illustrative, of the abrasive sheet against the top surface rather than a restrictive standpoint. of the disc 6, and the metal defining the open- The inventive idea involved is capable of ing '27 inthe flange 26' prevents accidental receivinga variety of mechanical expressions, displacement-of the half rings 19, thus proone of which, for the purpose of illustration, viding' positive means for securing the said is shown in'the accompanying drawing, in abrasive sheet in place, the said means being which, readily-removable when it is desired to re-' Figure 1 is a vertical sectional view partly place a new sheet for one that has been worn 0 I 1n elevation of my improved holder. out.

Figure 2 is a perspective view of the abra- To assemble the device, the core 21 is first sive sheet support. inserted into the opening 16, then the abra Figure 3 is a horizontal sectional view sive'sheet is temporarily secured to the holder N taken on line 3-3'Figure 1 and by springingthe half rings 19 in place, and

Figure 4 isa detail view of one of the half then the nut is screwed into place. rings forming the preliminary holding It will be seen that by temporarily holdean ing the sheet 20 in place by means of the half Referring now to the drawing in detail rings, the final clamping of the said sheet by 5 indicates a support preferably made. of the nut 25' will'be greatly facilitated. metal. Thesaid support5comprisesathread- It will also be understood that the said material such as fabric or the like is to be included.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. A holder for a sheet of sand paper, comprising a support having a peripheral groove, a substantial half ring adapted to be snapped into the said groove for temporarily holding, the sheet in place, and means for clamping the sheet against the support and maintaining the half ring in place.

2. A holder for a sheet of sandpaper, comprising a cylindrical support, an annular groove in the periphery thereof, an enlarged disc-like portion below the said groove, a substantial half ring adapted to snap into the said groove for temporarily holding the sheet in place, and means for clamping the sandpaper against the enlarged disc portion and maintaining the ring in place.

3. A holder for a sheet of: abrasive material, comprising a cylindrical support, a pair of annular grooves in the periphery thereof, an enlarged disc-like portion below the said grooves and provided with an external thread, a pair of substantial half rings adapted to snap into the said grooves for holding the said sheet about the support, and a nut on the disc portion to clamp the bottom of the sheet against the top surface of the said disc portion and maintain the half rings in place.

at. A sandpaper holder comprising a disclike member provided with threads on its periphery, a reduced cylindrical portion extending from the said disc member and provided with an annular peripheral groove, a substantial half ring fitting into the said groove for maintaining the sandpaper about the periphery of reduced cylindrical portion, and a nut to clamp the sandpaper against one surface of the disc-like member.

5. A holder for a sheet of sandpaper, comprising a cylindrical hub provided with a central longitudinal bore and an annular groove in the periphery thereof, a resilient bufier in the said bore, the said hub and buffer forming a support for the sandpaper, an enlarged disc-like portion below the said annular groove, a substantial half ring fitting into the said groove for maintaining the sandpaper about the support, and a nut to clamp the lower edge of the sandpaper against the said disc-like portion.

In testimony whereof I have hereunto affixed my signature.

CARMELO ADORNETTO. 

